Question

The coordinate of point T are (3,-11). The midpoint of line ST is (3,-9). Find the coordinates of point S

Answer 1

Answer:

(3,-7)

Step-by-step explanation:

Midpoint Formula

(3,-9) = ((3+x)/2 , (-11+x)/2)

Solve for x coordinate

$3 = \frac{3 + x}{2} \\ 6 = 3 + x \\ 3 = x$

Solve for y coordinate

$- 9 = \frac{ - 11 + x}{2} \\ - 18 = - 11 + x \\ - 7 = y$

Therefore point s is (3, -7)